Examples with ScanResult android.net.wifi.ScanResult used on opensource projects

Example 1 with ScanResult

use of android.net.wifi.ScanResult in project android_frameworks_base by ParanoidAndroid.

the class WifiService method dump.

@Override
protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
    if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) != PackageManager.PERMISSION_GRANTED) {
        pw.println("Permission Denial: can't dump WifiService from from pid=" + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid());
        return;
    }
    pw.println("Wi-Fi is " + mWifiStateMachine.syncGetWifiStateByName());
    pw.println("Stay-awake conditions: " + Settings.Global.getInt(mContext.getContentResolver(), Settings.Global.STAY_ON_WHILE_PLUGGED_IN, 0));
    pw.println("mMulticastEnabled " + mMulticastEnabled);
    pw.println("mMulticastDisabled " + mMulticastDisabled);
    mWifiController.dump(fd, pw, args);
    mSettingsStore.dump(fd, pw, args);
    mNotificationController.dump(fd, pw, args);
    mTrafficPoller.dump(fd, pw, args);
    pw.println("Latest scan results:");
    List<ScanResult> scanResults = mWifiStateMachine.syncGetScanResultsList();
    if (scanResults != null && scanResults.size() != 0) {
        pw.println("  BSSID              Frequency   RSSI  Flags             SSID");
        for (ScanResult r : scanResults) {
            pw.printf("  %17s  %9d  %5d  %-16s  %s%n", r.BSSID, r.frequency, r.level, r.capabilities, r.SSID == null ? "" : r.SSID);
        }
    }
    pw.println();
    pw.println("Locks acquired: " + mFullLocksAcquired + " full, " + mFullHighPerfLocksAcquired + " full high perf, " + mScanLocksAcquired + " scan");
    pw.println("Locks released: " + mFullLocksReleased + " full, " + mFullHighPerfLocksReleased + " full high perf, " + mScanLocksReleased + " scan");
    pw.println();
    pw.println("Locks held:");
    mLocks.dump(pw);
    mWifiWatchdogStateMachine.dump(fd, pw, args);
    pw.println();
    mWifiStateMachine.dump(fd, pw, args);
    pw.println();
}

Example 2 with ScanResult

use of android.net.wifi.ScanResult in project android_frameworks_base by ParanoidAndroid.

the class ConnectionUtil method connectToWifiWithConfiguration.

/**
     * Connect to Wi-Fi with the given configuration.
     * @param config
     * @return true if we are connected to a given AP.
     */
public boolean connectToWifiWithConfiguration(WifiConfiguration config) {
    //  The SSID in the configuration is a pure string, need to convert it to a quoted string.
    String ssid = config.SSID;
    config.SSID = convertToQuotedString(ssid);
    // If wifi is not enabled, enable it
    if (!mWifiManager.isWifiEnabled()) {
        Log.v(LOG_TAG, "Wifi is not enabled, enable it");
        mWifiManager.setWifiEnabled(true);
        // wait for the wifi state change before start scanning.
        if (!waitForWifiState(WifiManager.WIFI_STATE_ENABLED, 2 * SHORT_TIMEOUT)) {
            Log.v(LOG_TAG, "Wait for WIFI_STATE_ENABLED failed");
            return false;
        }
    }
    boolean foundApInScanResults = false;
    for (int retry = 0; retry < 5; retry++) {
        List<ScanResult> netList = mWifiManager.getScanResults();
        if (netList != null) {
            Log.v(LOG_TAG, "size of scan result list: " + netList.size());
            for (int i = 0; i < netList.size(); i++) {
                ScanResult sr = netList.get(i);
                if (sr.SSID.equals(ssid)) {
                    Log.v(LOG_TAG, "Found " + ssid + " in the scan result list.");
                    Log.v(LOG_TAG, "Retry: " + retry);
                    foundApInScanResults = true;
                    mWifiManager.connect(config, new WifiManager.ActionListener() {

                        public void onSuccess() {
                        }

                        public void onFailure(int reason) {
                            Log.e(LOG_TAG, "connect failed " + reason);
                        }
                    });
                    break;
                }
            }
        }
        if (foundApInScanResults) {
            return true;
        } else {
            // Start an active scan
            mWifiManager.startScan();
            mScanResultIsAvailable = false;
            long startTime = System.currentTimeMillis();
            while (!mScanResultIsAvailable) {
                if ((System.currentTimeMillis() - startTime) > WIFI_SCAN_TIMEOUT) {
                    Log.v(LOG_TAG, "wait for scan results timeout");
                    return false;
                }
                // wait for the scan results to be available
                synchronized (this) {
                    // wait for the scan result to be available
                    try {
                        this.wait(WAIT_FOR_SCAN_RESULT);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    if ((mWifiManager.getScanResults() == null) || (mWifiManager.getScanResults().size() <= 0)) {
                        continue;
                    }
                    mScanResultIsAvailable = true;
                }
            }
        }
    }
    return false;
}

Example 3 with ScanResult

use of android.net.wifi.ScanResult in project android_frameworks_base by ResurrectionRemix.

the class WifiStressTest method testWifiScanning.

/**
     *  Stress Wifi Scanning
     *  TODO: test the scanning quality for each frequency band
     */
@LargeTest
public void testWifiScanning() {
    long scanTimeSum = 0, i, averageScanTime = -1;
    // count times of given ssid appear in scan results.
    int ssidAppearInScanResultsCount = 0;
    for (i = 1; i <= mScanIterations; i++) {
        logv("testWifiScanning: iteration: " + i);
        averageScanTime = scanTimeSum / i;
        writeOutput(String.format("iteration %d out of %d", i, mScanIterations));
        writeOutput(String.format("average scanning time is %d", averageScanTime));
        writeOutput(String.format("ssid appear %d out of %d scan iterations", ssidAppearInScanResultsCount, i));
        List<ScanResult> scanResultLocal = null;
        // wait for a scan result
        long start = 0;
        synchronized (mWifiScanResultLock) {
            start = SystemClock.uptimeMillis();
            assertTrue("start scan failed", mWifiManager.startScan());
            try {
                mWifiScanResultLock.wait(WAIT_FOR_SCAN_RESULT);
            } catch (InterruptedException e) {
            // ignore
            }
            scanTimeSum += SystemClock.uptimeMillis() - start;
            // save the scan result while in lock
            scanResultLocal = mLastScanResult;
        }
        if (scanResultLocal == null || scanResultLocal.isEmpty()) {
            fail("Scan results are empty ");
        }
        logv("size of scan result list: " + scanResultLocal.size());
        for (ScanResult sr : scanResultLocal) {
            logv(String.format("scan result: " + sr.toString()));
            if (mSsid.equals(sr.SSID)) {
                ssidAppearInScanResultsCount += 1;
                break;
            }
        }
    }
    Bundle result = new Bundle();
    result.putLong("actual-iterations", i - 1);
    result.putLong("avg-scan-time", averageScanTime);
    result.putInt("ap-discovered", ssidAppearInScanResultsCount);
    getInstrumentation().sendStatus(Activity.RESULT_FIRST_USER, result);
    if (i == mScanIterations + 1) {
        writeOutput(String.format("iteration %d out of %d", i - 1, mScanIterations));
        writeOutput(String.format("average scanning time is %d", scanTimeSum / (i - 1)));
        writeOutput(String.format("ssid appear %d out of %d scan iterations", ssidAppearInScanResultsCount, i - 1));
    }
}

Example 4 with ScanResult

use of android.net.wifi.ScanResult in project android_frameworks_base by ResurrectionRemix.

the class WifiTracker method fetchScanResults.

private Collection<ScanResult> fetchScanResults() {
    mScanId++;
    final List<ScanResult> newResults = mWifiManager.getScanResults();
    if (newResults == null) {
        return null;
    }
    for (ScanResult newResult : newResults) {
        if (newResult.SSID == null || newResult.SSID.isEmpty()) {
            continue;
        }
        mScanResultCache.put(newResult.BSSID, newResult);
        mSeenBssids.put(newResult.BSSID, mScanId);
    }
    if (mScanId > NUM_SCANS_TO_CONFIRM_AP_LOSS) {
        if (DBG)
            Log.d(TAG, "------ Dumping SSIDs that were expired on this scan ------");
        Integer threshold = mScanId - NUM_SCANS_TO_CONFIRM_AP_LOSS;
        for (Iterator<Map.Entry<String, Integer>> it = mSeenBssids.entrySet().iterator(); it.hasNext(); ) /* nothing */
        {
            Map.Entry<String, Integer> e = it.next();
            if (e.getValue() < threshold) {
                ScanResult result = mScanResultCache.get(e.getKey());
                if (DBG)
                    Log.d(TAG, "Removing " + e.getKey() + ":(" + result.SSID + ")");
                mScanResultCache.remove(e.getKey());
                it.remove();
            }
        }
        if (DBG)
            Log.d(TAG, "---- Done Dumping SSIDs that were expired on this scan ----");
    }
    return mScanResultCache.values();
}

Example 5 with ScanResult

use of android.net.wifi.ScanResult in project android_frameworks_base by ResurrectionRemix.

the class AccessPoint method getVisibilityStatus.

/**
     * Returns the visibility status of the WifiConfiguration.
     *
     * @return autojoin debugging information
     * TODO: use a string formatter
     * ["rssi 5Ghz", "num results on 5GHz" / "rssi 5Ghz", "num results on 5GHz"]
     * For instance [-40,5/-30,2]
     */
private String getVisibilityStatus() {
    StringBuilder visibility = new StringBuilder();
    StringBuilder scans24GHz = null;
    StringBuilder scans5GHz = null;
    String bssid = null;
    long now = System.currentTimeMillis();
    if (mInfo != null) {
        bssid = mInfo.getBSSID();
        if (bssid != null) {
            visibility.append(" ").append(bssid);
        }
        visibility.append(" rssi=").append(mInfo.getRssi());
        visibility.append(" ");
        visibility.append(" score=").append(mInfo.score);
        visibility.append(String.format(" tx=%.1f,", mInfo.txSuccessRate));
        visibility.append(String.format("%.1f,", mInfo.txRetriesRate));
        visibility.append(String.format("%.1f ", mInfo.txBadRate));
        visibility.append(String.format("rx=%.1f", mInfo.rxSuccessRate));
    }
    int rssi5 = WifiConfiguration.INVALID_RSSI;
    int rssi24 = WifiConfiguration.INVALID_RSSI;
    int num5 = 0;
    int num24 = 0;
    int numBlackListed = 0;
    // Number scan results we included in the string
    int n24 = 0;
    // Number scan results we included in the string
    int n5 = 0;
    Map<String, ScanResult> list = mScanResultCache.snapshot();
    // TODO: sort list by RSSI or age
    for (ScanResult result : list.values()) {
        if (result.frequency >= LOWER_FREQ_5GHZ && result.frequency <= HIGHER_FREQ_5GHZ) {
            // Strictly speaking: [4915, 5825]
            // number of known BSSID on 5GHz band
            num5 = num5 + 1;
        } else if (result.frequency >= LOWER_FREQ_24GHZ && result.frequency <= HIGHER_FREQ_24GHZ) {
            // Strictly speaking: [2412, 2482]
            // number of known BSSID on 2.4Ghz band
            num24 = num24 + 1;
        }
        if (result.frequency >= LOWER_FREQ_5GHZ && result.frequency <= HIGHER_FREQ_5GHZ) {
            if (result.level > rssi5) {
                rssi5 = result.level;
            }
            if (n5 < 4) {
                if (scans5GHz == null)
                    scans5GHz = new StringBuilder();
                scans5GHz.append(" \n{").append(result.BSSID);
                if (bssid != null && result.BSSID.equals(bssid))
                    scans5GHz.append("*");
                scans5GHz.append("=").append(result.frequency);
                scans5GHz.append(",").append(result.level);
                scans5GHz.append("}");
                n5++;
            }
        } else if (result.frequency >= LOWER_FREQ_24GHZ && result.frequency <= HIGHER_FREQ_24GHZ) {
            if (result.level > rssi24) {
                rssi24 = result.level;
            }
            if (n24 < 4) {
                if (scans24GHz == null)
                    scans24GHz = new StringBuilder();
                scans24GHz.append(" \n{").append(result.BSSID);
                if (bssid != null && result.BSSID.equals(bssid))
                    scans24GHz.append("*");
                scans24GHz.append("=").append(result.frequency);
                scans24GHz.append(",").append(result.level);
                scans24GHz.append("}");
                n24++;
            }
        }
    }
    visibility.append(" [");
    if (num24 > 0) {
        visibility.append("(").append(num24).append(")");
        if (n24 <= 4) {
            if (scans24GHz != null) {
                visibility.append(scans24GHz.toString());
            }
        } else {
            visibility.append("max=").append(rssi24);
            if (scans24GHz != null) {
                visibility.append(",").append(scans24GHz.toString());
            }
        }
    }
    visibility.append(";");
    if (num5 > 0) {
        visibility.append("(").append(num5).append(")");
        if (n5 <= 4) {
            if (scans5GHz != null) {
                visibility.append(scans5GHz.toString());
            }
        } else {
            visibility.append("max=").append(rssi5);
            if (scans5GHz != null) {
                visibility.append(",").append(scans5GHz.toString());
            }
        }
    }
    if (numBlackListed > 0)
        visibility.append("!").append(numBlackListed);
    visibility.append("]");
    return visibility.toString();
}